发明授权
- 专利标题: Method for calculating a result of a division with a floating point unit with fused multiply-add
- 专利标题(中): 用融合乘法运算用浮点单位进行除法的结果的方法
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申请号: US11458405申请日: 2006-07-19
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公开(公告)号: US07873687B2公开(公告)日: 2011-01-18
- 发明人: Guenter Gerwig , Holger Wetter
- 申请人: Guenter Gerwig , Holger Wetter
- 申请人地址: US NY Armonk
- 专利权人: International Business Machines Corporation
- 当前专利权人: International Business Machines Corporation
- 当前专利权人地址: US NY Armonk
- 代理商 Steven Chiu
- 主分类号: G06F7/487
- IPC分类号: G06F7/487
摘要:
The invention proposes a Floating Point Unit with fused multiply-add, with one addend Method for calculating a result of a division with an A-register and a B-register for two multiplicand operands and a C-register for an addend operand, wherein a divide processor using a subtractive method for calculation with a divisor register and a partial remainder register and a multiplier associated to an subtractor uses the C-register as input, wherein while loading the fraction of the dividend through the divisor register into the partial remainder register of the divide processor a calculated shifting is applied for alignment by using the multiplier associated to the subtractor.
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